'''Linefind''' is a detector for vertical features in images. It tries to find vertical lines using the same algorithm as [[Calibrate lens gui#Line detection|Calibrate_lens_gui]] and assign [[Vertical control points|vertical control points]] to them.

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'''Linefind''' is a detector for vertical features in images. It tries to find vertical lines using the same algorithm as [[Calibrate lens gui#Line detection|Calibrate_lens_gui]] and assigns [[Vertical control points|vertical control points]] to them. The detection runs on the source images, if the input images are [[Rectilinear Projection|rectilinear images]]. In the other cases (e. g. [[Fisheye Projection|fisheye images]]) the input images are reprojected to an [[Equirectangular Projection|equirectangular projection]] and the detection works on the reprojected images.

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It using the [[roll|roll value]], saved in the pto project file, to determine what is "top" and "bottom". So before running '''linefind''' check that your [[roll|roll values]] are correct (E.g. when using images straight from the camera, use a roll value of 0 for landscape and a value of 90 or 270 for portrait images. If your camera has an orientation sensor, [[Hugin]] can detection this information automatically and sets the roll value accordingly when adding such images into Hugin.

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It uses the [[roll|roll value]], saved in the pto project file, to determine what is "top" and "bottom". So before running '''linefind''' check that your [[roll|roll values]] are correct (E. g. when using images straight from the camera, use a roll value of 0 for landscape and a value of 90 or 270 for portrait images. If your camera has an orientation sensor, [[Hugin]] can detect this information automatically and sets the roll value accordingly when adding such images into Hugin.

= Usage =

= Usage =

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linefind --image=0 --image=4 -o output.pto input.pto

linefind --image=0 --image=4 -o output.pto input.pto

will only search for vertical lines in image 0 and 4.

will only search for vertical lines in image 0 and 4.

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[[Category:Software:Platform:Windows]]

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[[Category:Software:Platform:Linux]]

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[[Category:Software:Platform:Mac OS X]]

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[[Category:Software:Hugin]]

Latest revision as of 15:46, 13 December 2011

General and description

Linefind is a detector for vertical features in images. It tries to find vertical lines using the same algorithm as Calibrate_lens_gui and assigns vertical control points to them. The detection runs on the source images, if the input images are rectilinear images. In the other cases (e. g. fisheye images) the input images are reprojected to an equirectangular projection and the detection works on the reprojected images.
It uses the roll value, saved in the pto project file, to determine what is "top" and "bottom". So before running linefind check that your roll values are correct (E. g. when using images straight from the camera, use a roll value of 0 for landscape and a value of 90 or 270 for portrait images. If your camera has an orientation sensor, Hugin can detect this information automatically and sets the roll value accordingly when adding such images into Hugin.

Usage

The general usage is

linefind -o output.pto input.pto

If the --output/-o switch is missing then the suffix "_line" is added to the filename.

The maximal number of lines added per image can be given with the --lines switch (or short -l):